The Impact of Intraseasonal Oscillations in the Tropical Atmosphere on the Formation of Extreme Central Vietnam Precipitation
The Impact of Intraseasonal Oscillations in the Tropical Atmosphere on the Formation of Extreme Central Vietnam Precipitation
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DOI：
10.2151/sola.2012-015
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发表时间：
2012
期刊：
影响因子：
1.9
通讯作者：
P. Wu;Y. Fukutomi;J. Matsumoto
中科院分区：
文献类型：
--
作者：
P. Wu;Y. Fukutomi;J. Matsumoto
本研究分析了2010年10月2 - 5日越南中部发生的特大暴雨事件的大气环流。对日本气象厅气候数据同化系统（JCDAS）数据的分析结果表明，来自西太平洋的天气尺度热带扰动和来自印度洋的马登朱利安振荡（MJO）强活动相的东传的综合影响是主要原因。对1981 ~ 2010年30年间该地区雨季MJO活动的研究表明，热带大气季节内振荡是越南中部极端降水事件形成的重要因素。
The present study examined the atmospheric circulations leading to the extraordinary heavy precipitation event that occurred in central Vietnam during 2−5 October 2010. Results from an analysis of data from the Japan Meteorological Agency Climate Data Assimilation System (JCDAS) showed that the combined effects of a westward-propagating synoptic-scale tropical disturbance from the western Pacific and the eastward propagation of a strong active phase of the Madden Julian Oscillation (MJO) from the Indian Ocean were the primary causes. Investigation of MJO activities during the wet season in the region for the 30 years from 1981 to 2010 revealed that the intraseasonal oscillations in the tropical atmosphere are an important factor in the formation of extreme precipitation events in central Vietnam.